28068704 has 24 divisors (see below), whose sum is σ = 55385568. Its totient is φ = 14002560.

The previous prime is 28068701. The next prime is 28068707. The reversal of 28068704 is 40786082.

It is an interprime number because it is at equal distance from previous prime (28068701) and next prime (28068707).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28068701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20489 + ... + 21815.

It is an arithmetic number, because the mean of its divisors is an integer number (2307732).

Almost surely, 2^28068704 is an apocalyptic number.

It is an amenable number.

28068704 is a deficient number, since it is larger than the sum of its proper divisors (27316864).

28068704 is a wasteful number, since it uses less digits than its factorization.

28068704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 28068704 is about 5297.9905624680. The cubic root of 28068704 is about 303.9070583839.

The spelling of 28068704 in words is "twenty-eight million, sixty-eight thousand, seven hundred four".